We added XML versions of the audio and video tag samples so you can actually try to mux tags in mkvmerge and see how it looks like on the output.

We strongly encourage people to use Tags whenever they have the relevant information. Use as many as you can ! Player support will follow little by little. And with bigger and bigger storage the need to categorize all your .mkv files should become more and more crucial. Filenames are just not good enough to store all the relevant information you might want for archiving your content, hidden in folders.